LabVIEW Control Design and Simulation Module

SI Load System Model from File VI

  • Updated2023-03-14
  • 3 minute(s) read

SI Load System Model from File VI

Owning Palette: Model Management VIs

Requires: Advanced Signal Processing Toolkit or Control Design and Simulation Module

Loads a system model from a .sim file. A .sim file is a system identification model file that saves all model coefficients regardless of the model type. Use the SI Save System Model to File VI to save a system model to a .sim file.

Example

file path specifies the path to the file from which you want to load the system model. If you specify a valid path in file path, this VI loads the model from the file whose path is file path. If file path is empty (default) or is <Not A Path>, this VI displays a dialog box from which you can select a file. You receive an error if you do not specify file path.
start path specifies the path to the initially displayed directory or folder in the Open a file containing system identification model dialog box. If you do not specify a valid path in file path, the Open a file containing system identification model dialog box opens. You can select the file from which you want to load the system model from this dialog box. The default value is <Not A Path>, which is the path to the last directory or folder shown in the Open a file containing system identification model dialog box.
error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
system model returns information about the model structure, nominal or estimated parameters, identification result, and so on.
model type returns the model type and indicates if the system type is SISO, MISO, or MIMO.

0Undefined (default)
1AR
2ARX (SISO)
3ARX (MISO)
4ARX (MIMO)
5ARMAX (SISO)
6ARMAX (MISO)
7Output-Error (SISO)
8Output-Error (MISO)
9Box-Jenkins (SISO)
10Box-Jenkins (MISO)
11General-Linear (SISO)
12General-Linear (MISO)
13State-Space (SISO)
14State-Space (MISO)
15State-Space (MIMO)
16Transfer Function (SISO)
17Transfer Function (MISO)
18Transfer Function (MIMO)
19Zero-Pole-Gain (SISO)
20Zero-Pole-Gain (MISO)
21Zero-Pole-Gain (MIMO)
new file path returns the path of the file from which this VI loads the system model. You can use this output to determine the path of the file that you opened using the Open a file containing system identification model dialog box. new file path returns <Not A Path> if you click the Cancel button in the dialog box.
error out contains error information. This output provides standard error out functionality.

Example

Refer to the Load Model from File VI in the labview\examples\System Identification\Getting Started\General.llb for an example of using the SI Load System Model from File VI.

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